Quite an amazin game, full of fun and action . No matter what, its a game that you must play, trust me it will be fun.
Now the pros and cons. The graphics aren't that bad, really, they are pretty good, in both PS3 and 360, movement is easy to master, jumping is quite simple. The only problem i found in this game is its repetitive mission style and those guys that are always hitting you and giving away your position, only god knows how much i hate them. Another problem is that when you beat the game you gotta start again the whole memory, even if you just want to get a view point, that's a bit annoying.
The game is not that short, so you can enjoy it. I spend 2 weeks beating it. The horse riding seems to me so real. When fighting and escaping from the guards, hiding is always both simple and hard, because other may see you doing something "inappropriate" and join the fight.
You must not let this game away, buy it, rent it, ask a friend to lend it to you.